UUID.Set

Fork of elm/core's Set, bypassing the "comparable"-key limitation for UUIDs. Also includes some extras.

Insert, remove, and query operations all take O(log n) time.

Sets

type Set

Represents a set of unique UUIDs.

Build

empty : Set

Create an empty set.

singleton : UUID -> Set

Create a set with one UUID.

insert : UUID -> Set -> Set

Insert a UUID into a set.

remove : UUID -> Set -> Set

Remove a UUID from a set. If the UUID is not found, no changes are made.

Query

isEmpty : Set -> Bool

Determine if a set is empty.

member : UUID -> Set -> Bool

Determine if an UUID is in a set.

size : Set -> Int

Determine the number of elements in a set.

Combine

union : Set -> Set -> Set

Get the union of two sets. Keep all values.

intersect : Set -> Set -> Set

Get the intersection of two sets. Keeps values that appear in both sets.

diff : Set -> Set -> Set

Get the difference between the first set and the second. Keeps values that do not appear in the second set.

Lists

toList : Set -> List UUID

Convert a set into a list, sorted from lowest to highest.

fromList : List UUID -> Set

Convert a list into a set, removing any duplicates.

Transform

map : (UUID -> comparable) -> Set -> Set comparable

Map a function onto an elm/core's Set, creating a new set with no duplicates.

foldl : (UUID -> b -> b) -> b -> Set -> b

Fold over the values in a set, in order from lowest to highest.

foldr : (UUID -> b -> b) -> b -> Set -> b

Fold over the values in a set, in order from highest to lowest.

filter : (UUID -> Bool) -> Set -> Set

Only keep elements that pass the given test.

See elm/core's Set.filter for the original version.

partition : (UUID -> Bool) -> Set -> ( Set, Set )

Create two new sets. The first contains all the elements that passed the given test, and the second contains all the elements that did not.

Extra

getFirst : Set -> Maybe UUID

Retrieve the node with the smallest key.

toggle : UUID -> Set -> Set

Like insert, but removes if the key already exists int the set, discarding the new value too.

PedroHLC/elm-uuid-dict/1.0.0